Ophthalmic mounting



April 26, 1921. 1,625,833

F. A. STEVENS OPHTHALMIC MOUNT-1N6 Filed M11. 21. 1922 2 Sheets-Sheet 1 .272 vezz Z011 fieoermfiAJ/ereva April 26, 1927. v. 5.833

, F. A. STEVENS OPHTHALMIC MOUNTING F1199! Auz. 21. 1922 .2 Sheets-Sheet 2 .252 L'erzfoi".

Patented Apr. 26, 1927.

UNITED STATES PATENT OFFICE.

FREDERICK A. sruvnus, or raovrnnnon, nHonE Isnn vn, Assrsnon, ."BY MESNE .es-

SIGNMENTS, r BAUSCH AND oans or'rIoaL COMPANY, or aocnnsrnn, NEW

YORK, A CORPORATION OF NEW YORK.

OPHTHALMIC MOUNTING.

Application filed August 21, 19 22.

The present invention relates to ophthalmic mountings, and more particularly to eyeglass mountings of the finger-piece type, in which the action of the nose guards is controlled by springs.

The chief object of the. invention is to eliminate the tendency for the delicate moving parts of mountings of the above-described character to become loosened by friction. A further objectis to improve the sprin adjustment of mountings of this type. Other objects will appear in the course of the following description.

lVith these ends in view. the invention consists of the ophthalmic mounting hereinafter described, illustrated in the accompanying drawings and defined in the appended claims.

Fig. 1 of the accompanying drawings is a fragmentary elevation of an eyeglass mounting constructed according to a preferred embodiment of the present invention; Fig. 2 is longitudinal section of the same; Fig. 3 is an elevation, partly in section, showing parts of the mountingdetached; Figs. 4, 5,

(5 and 7 are views of modifications; Fig. 8 is a section taken upon the line 8.8 of Fig. 7, looking in the direction of the arrows; Fig. 9 is a view of a further modification; and Fig. 10 is a section taken upon the line lO--1O of Fig. 9 looking in the direction of the arrows.

Eyeglass mountings of the linger-piece type commonly comprise abridge 2 provided at each end with a support 4; that carries a lens clamp 6 for a lens 8. Each support it has a post 10 about which a nose-guard lever 12, carrying a nose guard 14:, is pivoted. The present invention has to do with mountings in which the post 10 is rigidly secured to the support 4. This feature forms, in itself, no part of the present invention, but it should be noted that the post illustrated herein is not intended to be removable, and

hence is not secured to the support 4 by unsatisfactory spinning-over processes and the like, The guard lever is shown provided with a bearing sleeve 16 within which the post 10 isireceived. A spring 18 for controlling .the guard lever 12 is coiled about the bearing sleeve 16. One end 20 of the spring 18 engages a stationary portion, such .as theear 22, of the mounting, and the other .end 2% engages the guard lever 12 to main Serial No. 583,204.

t ain the guard lever yieldingly pressed against the nose. The eye-glasses may be removed from the nose by actuating the guard levers 12 in oppositionto the action of the springs 18. Such actuation induces a tendency for the moving parts to become clamped in position upon the post 10, therefore, with the teeth 28 and 30 interengaging, the cap 26 will remain in clamped position. No amount of actuation of the guard lever 1.2 about the post 10 can loosen the cap 26 so clamped. The cap 26 is clamped in position upon the vpost 10 by a screw 32 thatjextends through an opening 34 in the cap 26 and threads into interiorly provided threads 36 of the post 10. In order that the screw 32 may turn freely with respect to the cap 26, the neck 38 of the screw 32 is made of reduced diameter. The opening 34 is provided with screw threads that are adapted to mesh with the threads of the screw 82, so that the screw must be threaded through the opening 3% before the neck 38 may enter the opening 3%. The cap 26 .and the screw 32 may thus be handled as a unit, the cap being freely held about the neck 38, accidental separation of the cap from the screw being prevented by the screw threads and the head d0 of the screw 32. To make the screw head 40 less conspicuous, it is seated in a recess 39 provided upon the cap 26.

The interengaging teeth 28 and 3 0,may be y-shaped, as shown in Figs. 2, 3 and 5,

of rectangular shape, as shown in Fig. 6,

or of any other desired convenient construction. They may be small or large, numerous or few. As their purpose is to prevent ro- .tation or otherloosening of the cap 26 upon the post 10, any equivalent construction may equally well be employed within thesc pe of the present invention. For example, the

post 10 may be provided with a polygon shaped upper portion 42 Figs. 7 to 10, and

the cap 26 may be provided with a correspending polygon-shaped opening d4 within which opening the polygon-shaped upper portion 42 of the post 10 may be received to prevent loosening of the cap 26.

' The guard lever 12 is thus pivotally mounted between the support at and the cap 26, the spring 18 being coiled about the hearing sleeve 16 of the guard lever. The sleeve 16 may be of a length equal to the distance between the support a and the cap 26, as shown in Fig. 5, t5 and T. Preferably, however, it is shorter, the cap being provided with :1 depending circular flange -l6 that encloses the post 10, and engages the sleeve 16 to maintain it against displacement, as shown in Figs. 2 and 3. The flange may obviously be positioned within the post 10, as illustrated at 4:8 in Fig. 9. The e:\'te- 'riorly mounted flanges 46 and the interiorly mounted flanges 48 both aid to a more socure holding of the cap 26 upon the post 10. Something of the same ell'ect as is obtaiued with the flange i8 is found in the use of the teeth .28 projecting from the cap 26, within the sleeve 16, as shown in Figs. 5

and (i.

The construction above described obvious ly renders the cap 26 rotat-ably adjustable upon the post 10. ll, therefore, it is provided with a hook or other projecting member 50, Fig. 4, for engaging the end 20, of the spring 18, rotatable adjustment of the cap will adjust the tension of the spring 18. A very simple mounting is thus provided, the parts of which can not accidentally become loosened, and the structure of which incidentally provides a sometimes dcsirable spring adjustment.

Other modifications and changes will ocour to persons skilled in the art, and all such are considered to fall within the scope of the invention as defined in the appended claims.

hat is claimed as new is:

1. An eyeglass mounting having, in combination a suvaort havin ri idl' secured 7 53 D thereto a post the free end of which is provided with teeth, and a cap mounted upon the post having teeth engaging the teeth of the post, and a guard having a sleeve :treely mounted about the post between the support and the cap.

2. An eyeglass mounting having, in co1nbination, a support having rigidly secured thereto a post having interiorly provided threads, a guard pivoted about the post, a cap between which and the support the guard is mounted having an opening, a spring secured both to the guard and to the cap, the cap being adapted to be rotatably adjusted relative to the post to el'l'ect adjustment in the tension of the spring, means for preventing rotation of the cap relative to the post away from its adjusted position,

and a screw extending through the opening and threaded into the interiorly provided threads 01 the post.

An eyeglass mounting having, in combination, a support having rigidly secured thereto a post having interiorly provided threads, a guard pivoted about the post, a cap between which and the support the guard is inountcdhaving a recess and an opening, a spring secured both to the guard and to the cap, the cap being adapted to be rotalably adjusted relative to the post to cllcct adjustment in the tension oi the spring, means l'or preventing rotation of the cap relative to the post away from its adj tasted position, and a screw extending through the opening and threaded into the interiorly provided threads of the post, the screw having a head seated in the recess.

4. An eyeglass mounting having, in combination, a support having rigidly secured thereto a post the tree end ol which is pro vided with teeth, a cap mounted upon the post having a llange in contact with the post and engaging the teeth of the post, and a guard having a sleeve ireely niouuted about the post between the support and the cap.

5. An eyeglass mounting having, in combination, a support having rigidlysecured thereto a post having interiorly provided threads, the free end oi. the post being provided with teeth, a cap mounted upon the post having teeth engaging thctecth of the post, the cap being provided with a recess, an opening comnmnicating with tho rtmcss and a flange in contact with the post, a guard having a sleeve freely mounted about the post between the support and the cap, and a screw extending through the opening and threaded into the interiorly provided threads 01 the post, the screw having a head seated in the recess.

6. An eyeglass mounting having, in combination, a support having a post, a guard pivoted about the post, a cap between which and the support the guard is mounted, the cap being adapted to be rotatably adjusted relative to the post, means for preventing rotation of the cap relative to the post away from its adjusted position, and a spring for controlling the guard connected to the cap.

7. An eyeglass mounting having, in co1nbination, a support having a post the free end of which is provided with teeth, a cap adj ustably mounted upon the post having teeth adjustably engaging the teeth of the post, a guard having a sleeve freely mounted about the post between the support and the cap, and a spring for controlling the guard connected to the cap.

8. An eyeglass mounted having, in combination, a support having a post the free end of which is provided with teeth, a cap adjustably mounted upon the post having teeth adjustably engaging the teeth ot the post, a screw for clan'ipiug the cap in ad ltlltl justed position, a guard having a sleeve freely mounted about the post between the support and the cap, the cap having a flange adapted to ei'lgage the sleeve, and a spring for controlling the guard connected to the cap.

9. An eyeglass mounting having, in combination, a support having rigidly secured thereto a post having interiorly provided threads, the free end of the post being pro vided with teeth, a cap mounted upon the post having teeth engaging the teeth of the post and having an opening, a guard pivoted about the post between the cap and the support, and a screw extending through the opening and threaded into the interiorly provided threads of the post.

l0. An eyeglass mounting having, in combination, a support having rigidly secured theretoa post having interiorly provided threads, the free end of the post being provided with teeth, a cap mounted upon the post having teeth engaging the teeth of the post and having an opening, a guard having a sleeve freely mount-ed about the post between the cap and the support, and a screw extending through the opening and threaded into the interiorly provided threads of the post.

11. An eyeglass mounting having, in combination, a support having rigidly secured thereto a post having interiorly provided threads, a guard having a sleeve freely pivoted about the post, a cap between which and the support the guard is mounted having an opening, means for preventing rota tion of the cap relative to the post, and a screw extending through the opening and threaded into the interiorly provided threads of the post.

12. An eyeglass mounting having, in combination, a support provided with a post having interiorly provided threads, a guard pivoted about the post, a cap between which and the support the guard is mounted having a threaded opening, and a screw threaded through the opening and into the interiorly provided threads oi the post, the screw having a neck of reduced diameter in order that it may turn freely with respect to the cap while preventing accidental separation of the cap from the screw.

13. An eyeglass mounting having, in combination, a support having rigidly secured thereto a post having interiorly provided threads, a guard having a bearing sleeve freely pivoted about the post, a cap between which and the support the guard is mounted having an opening, the bearing sleeve be ing of a length substz'intially equal to the distance between the supportand the cap, a spring coiled about the bearing sleeve and secured both to the guard and to the cap, means for preventing rotation of the cap relative to the post, and a screw extending through the opening and threaded into the interiorly provided threads of the post.

In testimony thereof, I have hereunto subscribed my name this 15th day of August, 1922.

FREDERICK A. STEVENS. 

